The New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini) Author Gustafson, Grey T. Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA gtgustafson@gmail.com Author Miller, Kelly B. Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA text ZooKeys 2015 2015-01-23 476 1 135 http://dx.doi.org/10.3897/zookeys.476.8630 journal article http://dx.doi.org/10.3897/zookeys.476.8630 1313-2970-476-1 086D71AF8A294F028559C2E0456B5C5B FC4DC947FF97FF86190BFFD8B82CAB56 578702 Dineutus longimanus cubensis Ochs, 1927 Figures 20 , 21 , 55 Dineutus (Dineutus) longimanus cubensis Ochs 1927a : 192, Dineutus (Rhombodineutus) longimanus : Guignot 1950 : 127, Dineutus (Cyclinus) longimanus : Brinck 1955 : 106, Dineutus longimanus cubensis : Peck et al. 1998 : 158. Type locality. Cuba, Santiago de Cuba. Specimens examined. 17 Type material examined. None examined. Material examined. CUBA: Holguin : Sierra de Nipe, 25km S Mayari, Pinares de Mayari, 650 m, 03.vii.1990, leg. M.A. Ivie (7 ex. WIBF); Sierra de Nipe, Rio Piloto, 4.ii.1967, leg. R. Bielawski & A. Riedel (1 ex. WIBF) same as previous except: 590 m, 07.vii.1990, leg. M.A. Ivie (7 ex. WIBF); Pinar del Rio: Sierra del Rosario, Rancho Mundito, 16.vi.1959, leg. M.W. Sanderson, C59-29 (1 ex. FSCA); Sierra del Rosario, ca. 15km S CincoPesos Rangel, 420 m, 29.vi.1990, leg. M.A. Ivie, (1 ex. WIBF). Diagnosis. Male (Fig. 20C-D ). Size: 11.4-12.9 mm. Body form regularly elongate oval; elytral apices spinose, with sutural angle produce to a spine, and a second parasutural spine, with thorn-like serrations and irregularities present apically and apicolaterally, apicolateral sinuation mostly absent, elytra with reticulation strong laterally and apically, producing a bronzy appearance, medial disc with reticulation more weakly impressed and composed of smaller cells accompanied by very shallowly impressed punctation, striae mostly effaced by reticulation, if evident at all faintly apparent medially on disc, lateral marginal depression of elytra absent; profemora with very small sub-apicoventral tooth; protibiae club-shaped; mesotarsal claws (Fig. 21C ) with ventral margin regularly rounded and evenly narrowed apically; metacoxae with numerous shallow punctures present over most their ventral face; venter lighter in color: reddish brown to reddish orange. Aedeagus (Fig. 21A, B, D ) with median lobe in dorsal view shorter than parameres, nearly parallel sided, slightly wider basally and shallowly narrowed apicad, in apical 1/4 shallowly narrowed towards apex, apex regularly rounded, dorsally without narrow carina, ventrally sperm-groove narrow and parallel sided for most its length, apically briefly widened, in lateral view median lobe with dorsal margin shallowly sinuate in apical 1/3, apex broadly rounded; parameres in dorsal view with lateral margins not laterally expanded, parallel sided for most their length, and apically narrowly rounded. Female (Fig. 20A-B ). Size: 10.8-12.4 mm. Body form regularly elongate oval; elytral apices spinose, with sutural angle produce to a spine, and a second parasutural spine, with thorn-like serrations and irregularities present apically and apicolaterally, apicolateral sinuation mostly absent, elytra with reticulation strong laterally and apically, producing a bronzy appearance, medial disc with reticulation more weakly impressed and composed of smaller cells accompanied by very shallowly impressed punctation, striae mostly effaced by reticulation, if evident at all located medially on disc, lateral marginal depression of elytra absent; profemora without sub-apicoventral tooth; protibiae club-shaped; metacoxae with numerous shallow punctures present over most their ventral face; venter lighter in color: reddish brown to reddish orange. Figure 20. Dineutus longimanus cubensis . A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm. Figure 21. Dineutus longimanus cubensis . A aedeagus dorsal view B aedeagus ventral view C ♂ mesotarsal claws D aedeagus lateral view. Scale bar for C ≈ 0.10 mm all others ≈ 1 mm. Differential diagnosis. Dineutus longimanus cubensis is unique among the other subspecies of Dineutus longimanus in being smaller in size (10.8-12.9 mm) and having the metacoxae with numerous shallow punctures present and covering most of their surface. The subspecies most similar to Dineutus longimanus cubensis is Dineutus longimanus jamaicensis and can primarily be distinguished by the differences in dorsal punctation and the punctures of the metacoxae as provided by the indentification key. Distribution (Fig. 55B ). Cuba ( Leng and Mutchler 1914a ; Ochs 1924 , 1926) Habitat. Lotic, according to Peck et al. (1998) this subspecies occurs in streams through out Cuba and is an accidental cave inhabitant. Cave records for this species include Cueva Jibara 8, Santiago de Cuba Province and Cueva Caja de Aqua, Saneti Spiritus Province ( Peck et al. 1998 ). Discussion. Information on the subspecies aside from its taxonomy has been scarce. Given what is currently known it appears that Dineutus longimanus cubensis is only known from Cuba. It is worth noting that the date of the description of Dineutus longimanus cubensis is often given as 1926 ( Ochs 1929 , 1938 ) as the name was used earlier by Ochs (1926-1927). However, according to Article 12.1 of The Code ( ICZN 1999 ) in order for the nomen to be available it must be accompanied by a description or definition and in 1926 the name was simply used with an asterix making it a nomen nudum at that time. The description of Dineutus longimanus cubensis was not included until the final part of the work published in 1927 on page 192 ( Ochs 1927a ). Thus the true date for Dineutus longimanus cubensis must be 1927 as that is when the nomen satisfied the criteria of The Code for availability.